
Junkers PCB 8 748 301 222 · Chip 8 744 501 228 · ZWA 24 1A 23
Aplicación a la variante exacta pendiente de confirmar. Placa electrónica de control de una caldera mural Junkers. En nuestra unidad se ven tres fusibles, un relé y el ajuste P1 «Max/Min». Antes de sospechar de ella, descarta la alimentación y los fusibles.
- Type of part
- Junkers
- Status
- Refurbished
- internal SKU
- PLC224
- Warranty
- 1 year
Compatible Junkers boilers
Junkers. 0 compatibilidades contrastadas. Hay otros 1 modelos que todavía estamos comprobando.
Models pending verification
These models are associated with this reference, but we have not finished verifying them yet, so we do not consider them compatibleIf your boiler is one of them, send us a photo of the part you are going to replace and we will verify it before you purchase.
| Junkers ZWA 24 1A 23 | Junkers | Unconfirmed |
|---|
Can't see your model or have questions? The printed reference takes precedence. How to check it · Send us a photo via WhatsApp.
How to check if it is the part for your boiler
The part reference, model, and equipment revision must be verified against the manufacturer's documentation.
- Turn the PCB: the printed circuit code, 8 748 301 222, is on the solder side. The integrated circuit has 8 744 501 228, with the label "LF 01.18" and "FD:185".
- Look for the front marking 8 748 300 369 (it may appear split as "8 748 300" and "369") and the silkscreen FD185.
- Check the three fuses: F1 T2A, F2 T1.25A, and F3 T3.15A, and the setting P1 "Max/Min". If they differ, consult us before ordering it.
- No la confundas con otras placas de la ZWA 24-1A: el despiece oficial da la 8 748 300 496, la 8748300417, 8748300488 o 8748300561. Compara los tres marcados.
- coinciden, llámanos al 911 17 77 77 con el modelo de tu caldera. ¿Dudas? Envíanos desde Contacto una foto de la etiqueta de tu placa y de la placa de características de la caldera.
Symptoms that require diagnosis in the junkers
Common symptoms and faults
- 01
Dead boiler and pilots that do not ignite despite having a demand for heating.
Cause: (ZWA24-1A23): comprueba antes la alimentación y los fusibles F1 y F2, luego el transformador y las conexiones; la placa es el último sospechoso.
These symptoms can have more than one cause. If your boiler displays a fault code, send it to us via WhatsApp along with a photo of the labeling, and we'll tell you if this is the part.
Technical sheet: Junkers
- Uniclima internal SKU
- PLC224
- Brand
- Junkers
- Type of part
- Junkers
- Units in stock
- 5 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days
Part data and available documentation
Contrast the label codes, PCB, and revision with the installed part; they are not necessarily equivalent references.
- Code visible on integrated circuit
- 8 744 501 228
- CI label marking
- LF 01.18
- FD marking on CI label
- FD:185
- FD screen printing
- FD185
- Fuse F1
- T2A
- Fuse F2
- T 1.25A
- Fuse F3
- T3.15A
- Power supply test point
- 5 V
- Ground test point
- GND
- SCL connector/signal
- SCL
- SDA connector/signal
- SDA
- Relay subcomponent
- HT II-2a / BA BA BB
- Adjustment P1
- Max/Min
- Indicator/screen printing
- Operation
- Separate front markings
- 8 748 300; 369
- PCB marking on the solder side
- 8 748 301 222
- Spare fuses — 2 A fuse
- 1 904 521 341 · Breakdown ZWA 24-1 A (2 A) and K (T2A)
- Spare fuses — Fuse 1.25 A
- 1 904 522 338 · ZWA 24-1 A (1.25 A) and K (T1,25A) breakdown
- Identification — Code visible on integrated circuit
- 8 744 501 228
- Identification — CI label marking
- LF 01.18
- Identification — FD marking on CI label
- FD:185
- Identification — Screen-printed FD marking
- FD185
- Identification — Separate front markings
- 8 748 300; 369
- Identification — PCB marking on solder side
- 8 748 301 222
- Fusible F1
- T2A
- Fusible F2
- T 1.25A
- Fusible F3
- T3.15A
- Technical sheet: Power supply test point
- 5 V
- Technical sheet: Ground test point
- GND
- Connector/signal SCL
- SCL
- Connector/signal SDA
- SDA
- Technical sheet: Relay subcomponent
- HT II-2a / BA BA BB
- Technical sheet: Adjustment P1
- Max/Min
- Indicator/screen printing
- Operation
- Pending applications to verify
- JUNKERS ZWA 24 1A 23 — compatibilidad anotada; pendiente de confirmar por variante.
- Not compatible or excluded from origin: Junkers ZW 20-1 KE/AME — It has a different PCB: J8748300371 (Italian catalog)
- Not compatible or excluded at source: Junkers ZWC 24/28-1 MFA/MFK — It uses a different base module: J8748300449 (same catalog)
- No compatible o excluidos: Junkers ZSN/ZWN/ZSR/ZWR 18..24 -7 KE y ZWR 18..24 -8 KE — Llevan el kit de placa 8748300892 ( alemana)
- No confundir: 8748300561 · 8748300488 · 87483004170 · 88748300417 — Placas que y venden para la ZWA 24 -1A23 (la 8748300561, también para la ZWA24-1AM) — En las documentación, ninguna une estos códigos a 8 748 301 222
- la referencia es 8 744 501 228 (chip y bolsa); 8 748 301 222 es el marcado del circuito impreso. Códigos asociados: 8748301222, 8744501228 o 8748300369. Confirmación registrada: que los tres van en esta placa: compáralos.
- To be confirmed: 8748301222: . 8 748 300 369: (como J8748300369; equivalencia deducida del número) y (empresa sin identificar; puede ser ). 8 744 501 228: . Ningún documentación los nombra; un PDF oficial de Bosch no se pudo leer.
- Aplicaciones registradas pendientes de confirmar por modelo, variante o programación: Junkers ZWA 24 1A 23.
